# NTSB ANC81DAA06: Cessna 180, N4721U, Fairbanks, AK, August 2, 1980

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 2, 1980
- Place: Fairbanks, AK · FAIRBANKS, AK
- Location: 64.8378° N, 147.7164° W: Placed by OpenAirDocs: center of Fairbanks, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=64.8378&lon=-147.7164&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 2, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 129265
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC81DAA06
- Page: https://openairdocs.org/ntsb/ANC81DAA06

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2835   80/8/2  NR.FAIRBANKS,AK       CESSNA 180          CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 2030                    N4721U              PX-  0  0  1  DUAL                      AGE 28, 1382 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            9 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          FARIBANKS,AK                RETURN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  TAKEOFF: OTHER
        PROBABLE CAUSE(S)
           DUAL STUDENT - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - DELAYED IN INITIATING GO-AROUND
           PILOT IN COMMAND - INADEQUATE SUPERVISION OF FLIGHT
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           MISCELLANEOUS ACTS,CONDITIONS - SIMULATED CONDITIONS
        REMARKS- SIM ENG FAILURE AFTR TKOF.FLOAT EQPD.
```

## Aircraft

- Registration: [N4721U](https://openairdocs.org/aircraft/N4721U), registered now, S/N 18051421, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 180
- Registry model: [Cessna 180G](https://openairdocs.org/model/cessna-180g) (registry code 2072616) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N4721U (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ANC25LA088](https://openairdocs.org/ntsb/ANC25LA088), Aug 19, 2025: Cessna 180G (N4721U), Delta Junction, AK, substantial damage. Probable cause: The pilot’s failure to maintain a rate of climb sufficient to clear obstacles during takeoff, resulting in a collision with tree-covered terrain.
- [NTSB ANC99LA033](https://openairdocs.org/ntsb/ANC99LA033), Mar 14, 1999: Cessna 180G (N4721U), Fairbanks, AK, substantial damage. Probable cause: Water contamination of the fuel supply, and the pilot's inadequate preflight inspection to ensure all water was removed from the fuel supply. Factors in the accident were a wrinkle in the wing fuel…

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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